Perhaps you should try some spelling variations:
theo chieu » theo tieu, theo chu, thi chieu
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
hang cong » hang nong, bang cong, thanh cong
dang cong » dung cong
van nhanh » van thanh, van hanh, van khanh
nhanh cau » nhanh cay, thanh chau, nhanh ha
ho chieu » hoc thieu, doi chieu, mot chieu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((theo chieu) or (ho chieu)) tinh - hanh tranh cua ((hang cong) OR (dang cong)) van nhanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((theo chieu) OR (ho chieu)) tinh - hanh tranh cua ((hang cong) OR (dang cong)) van nhanh cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((theo chieu) or (ho chieu)) tinh - hanh tranh cua ((hang cong) OR (dang cong)) van nhanh cau".
• Adding a wildcard symbol may retrieve word variants: ((theo chieu) or (ho chieu)) tinh - hanh tranh cua ((hang cong) OR (dang cong)) van nhanh cau*.